I had an opportunity to buy shares in the Pandora IPO but chose not to. If I was a super active trader and had stayed on top of it I could have made a fair bit of money as the stock popped by about 60% in early trading but closed even the first day up only about 10% from its IPO price. Yesterday, only a couple of days later, Pandora is trading below its IPO price. Today the price is down a bit more. Why did I not jump on Pandora? There are two key reasons. First, I spent a bunch of time readi...